Section V. UNIT MAINTENANCE INSTRUCTIONS

TM 5-4930-233-14

TM 4930-14/1

Section V. UNIT MAINTENANCE INSTRUCTIONS

4-9.

GENERAL MAINTENANCE

This paragraph contains general maintenance instructions which you must observe during

removal, disassembly, repair and reassembly of lubrication and servicing unit components.

WARNING

Clean all parts in a well ventilated area. Avoid inhaling solvent fumes and

prolonged exposure of the skin to cleaning solvent. Failure to do so can

cause severe injury or death. Do not use near flame or excessive heat.

Flash point of solvent is 100 to 138 (38 to 59 )

Prior to removing component assemblies, you should thoroughly clean the surrounding area

and the exterior surfaces of the unit being removed. Use dry cleaning solvent (Item 6 App. E)

for most general cleaning requirements. If assemblies are caked with grease, use a steam

cleaner with solvent. Take care to wear protective clothing when degreasing. Clean new

components or parts if they are received with a preservative coating.

When removing components, always securely block both trailer wheels using trailer chocks. If

special blocking procedures are required for a task, you will find these in the maintenance

procedure.

When disassembling components, tag and identify any matched or mated parts in the unit so

that they can be returned to their original locations or positions when reassembled.

Prior to component assembly, make certain that your hands, work bench, assembly tools and

parts to be assembled are thoroughly clean. Use clean, lintfree shop cloths or paper towels

when necessary to wipe parts.

When reassembling components, be sure that you coat moving and sliding parts with a light

oil. Also coat packings and oil seal lips with light oil. This reduces the possibility of cutting the

packages and seal lips when installing over sharp edges or threads. Also replace all locking

hardware, preformed packing paper or fiber gaskets and any parts that are subject to

If assembly work cannot be completed the same day, cover the assembly and remaining parts

with clean cloths or sheet plastic to keep out dust and contaminants which accumulate

overnight. Apply a light coat of oil to the remaining parts and clean parts prior to beginning

reassembly the following day.

After reassembly is completed, reclean the exterior surfaces and check condition of paint. If

paint was damaged during reassembly, sand the areas affected and touch up with the correct

paint and color. If sanded areas are through the paint and down to bare metal, apply a primer

coat and sand lightly before applying final coat. Mask off areas or parts that are not to be

painted.

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